/* roulang page: index */
:root {
            --primary: #0052d9;
            --primary-dark: #003a9b;
            --primary-light: #eaf1ff;
            --accent: #ff5c35;
            --accent-soft: #fff1ec;
            --dark: #101828;
            --dark-soft: #1d2939;
            --text-main: #1d2939;
            --text-muted: #667085;
            --border: #e4e7ec;
            --bg: #ffffff;
            --bg-light: #f6f8fc;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
            --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.1);
            --shadow-lg: 0 16px 48px rgba(16, 24, 40, 0.14);
            --transition-base: all 0.3s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover,
        a:focus {
            color: var(--primary);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 88px 0;
        }

        .section-alt {
            background: var(--bg-light);
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 100px;
            letter-spacing: 0.3px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            margin: 16px 0 12px;
            color: var(--dark);
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            margin: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 15px;
            line-height: 1.4;
            border: 2px solid transparent;
            transition: var(--transition-base);
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 18px rgba(0, 82, 217, 0.32);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 82, 217, 0.4);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-ghost:hover,
        .btn-ghost:focus {
            background: rgba(255, 255, 255, 0.22);
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.14);
        }

        .btn-light:hover,
        .btn-light:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ===== Header / Nav ===== */
        .app-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(228, 231, 236, 0.8);
            box-shadow: 0 1px 10px rgba(16, 24, 40, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 24px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 900;
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            letter-spacing: -0.5px;
            box-shadow: 0 4px 14px rgba(0, 82, 217, 0.34);
        }

        .brand-name {
            font-size: 18px;
            font-weight: 800;
            color: var(--dark);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }

        .brand-badge {
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 12px;
            font-weight: 700;
            padding: 2px 10px;
            border-radius: 100px;
            border: 1px solid #ffd4c4;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .nav-links {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
        }

        .nav-links li {
            margin: 0;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-muted);
            border-radius: 100px;
            transition: var(--transition-base);
        }

        .nav-links a:hover,
        .nav-links a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 700;
        }

        .nav-cta {
            padding: 9px 22px;
            border-radius: 100px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            box-shadow: 0 4px 14px rgba(0, 82, 217, 0.28);
            white-space: nowrap;
            transition: var(--transition-base);
        }

        .nav-cta:hover,
        .nav-cta:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            border-radius: 8px;
        }

        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--dark);
            border-radius: 2px;
            transition: var(--transition-base);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: linear-gradient(120deg, rgba(10, 22, 42, 0.92), rgba(16, 24, 40, 0.68)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 140px 0 160px;
            color: #fff;
            overflow: hidden;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.32);
            backdrop-filter: blur(8px);
            padding: 7px 18px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.4px;
            margin-bottom: 28px;
        }

        .hero-badge i {
            color: #ffd97a;
        }

        .hero h1 {
            font-size: 52px;
            line-height: 1.18;
            font-weight: 900;
            margin: 0 0 18px;
            letter-spacing: -0.5px;
        }

        .hero h1 span {
            color: #74a9ff;
        }

        .hero p {
            font-size: 18px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.84);
            max-width: 620px;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 34px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-tags .tag {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: rgba(255, 255, 255, 0.88);
            padding: 5px 14px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 500;
        }

        .hero-stats-bar {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            border-top: 1px solid rgba(255, 255, 255, 0.14);
        }

        .hero-stats-inner {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
        }

        .hero-stat {
            padding: 22px 16px;
            text-align: center;
            border-left: 1px solid rgba(255, 255, 255, 0.14);
        }

        .hero-stat:first-child {
            border-left: none;
        }

        .hero-stat .num {
            font-size: 30px;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.74);
            font-weight: 500;
            margin-top: 4px;
        }

        /* ===== Core Cards ===== */
        .core-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 36px 30px;
            height: 100%;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .core-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(0, 82, 217, 0.3);
        }

        .core-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 22px;
            background: var(--primary-light);
            color: var(--primary);
        }

        .core-card:nth-child(2) .icon-wrap {
            background: var(--accent-soft);
            color: var(--accent);
        }

        .core-card h3 {
            font-size: 20px;
            font-weight: 800;
            margin: 0 0 10px;
            color: var(--dark);
        }

        .core-card p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        .core-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .core-card .card-link i {
            font-size: 12px;
            transition: transform .3s;
        }

        .core-card .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Category Entry ===== */
        .category-entry-row {
            align-items: center;
        }

        .category-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .category-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform .5s;
        }

        .category-media:hover img {
            transform: scale(1.04);
        }

        .category-media .media-tag {
            position: absolute;
            left: 16px;
            top: 16px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(6px);
            color: var(--dark);
            font-size: 13px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 100px;
        }

        .category-content {
            padding: 20px 0 20px 32px;
        }

        .category-content .section-tag {
            margin-bottom: 16px;
        }

        .category-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            margin: 0 0 14px;
            line-height: 1.3;
        }

        .category-content p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .category-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 26px;
        }

        .category-list .mini-tag {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 100px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
        }

        /* ===== News List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .news-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-base);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .news-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(0, 82, 217, 0.25);
        }

        .news-item .news-tag {
            align-self: flex-start;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 100px;
            margin-bottom: 14px;
        }

        .news-item .news-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.45;
            display: block;
            margin-bottom: 8px;
            transition: var(--transition-base);
        }

        .news-item .news-title:hover {
            color: var(--primary);
        }

        .news-item .news-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--bg-light);
            padding-top: 14px;
        }

        .meta-date {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .meta-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .empty-state {
            grid-column: 1 / -1;
            text-align: center;
            background: var(--bg-light);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 16px;
        }

        /* ===== Ranking / Hot ===== */
        .hot-wrap {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 36px;
            position: relative;
            box-shadow: var(--shadow-sm);
        }

        .ranking-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .ranking-list li {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition-base);
        }

        .ranking-list li:last-child {
            border-bottom: none;
        }

        .ranking-list li:hover {
            background: var(--bg-light);
            margin: 0 -14px;
            padding-left: 14px;
            padding-right: 14px;
            border-radius: var(--radius-sm);
        }

        .ranking-num {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--bg-light);
            color: var(--text-muted);
            font-size: 13px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .ranking-list li:nth-child(1) .ranking-num {
            background: var(--primary);
            color: #fff;
        }

        .ranking-list li:nth-child(2) .ranking-num {
            background: #f59e0b;
            color: #fff;
        }

        .ranking-list li:nth-child(3) .ranking-num {
            background: #ef4444;
            color: #fff;
        }

        .ranking-item-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 3px;
        }

        .ranking-item-meta {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
        }

        .hot-side {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-lg);
            padding: 40px;
            color: #fff;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .hot-side::after {
            content: '';
            position: absolute;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            right: -40px;
            bottom: -40px;
        }

        .hot-side h3 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .hot-side p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .hot-side .btn-round {
            align-self: flex-start;
            background: rgba(255, 255, 255, 0.16);
            color: #fff;
            padding: 9px 22px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition-base);
        }

        .hot-side .btn-round:hover {
            background: rgba(255, 255, 255, 0.3);
            color: #fff;
        }

        /* ===== Featured Row ===== */
        .feature-row {
            align-items: center;
            margin-bottom: 48px;
        }

        .feature-row:last-child {
            margin-bottom: 0;
        }

        .feature-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .feature-media img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            transition: transform .5s;
        }

        .feature-media:hover img {
            transform: scale(1.04);
        }

        .feature-text {
            padding: 20px 0 20px 36px;
        }

        .feature-text h3 {
            font-size: 26px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .feature-text p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .feature-list {
            list-style: none;
            margin: 0 0 20px;
            padding: 0;
        }

        .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-main);
            font-weight: 500;
        }

        .feature-list li i {
            color: var(--primary);
            width: 18px;
            text-align: center;
            font-size: 13px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-accordion {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .faq-accordion .accordion-item {
            border-bottom: 1px solid var(--border);
            background: transparent;
        }

        .faq-accordion .accordion-item:last-child {
            border-bottom: none;
        }

        .faq-accordion .accordion-title {
            padding: 22px 30px;
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            background: transparent;
            border: none;
            position: relative;
            transition: var(--transition-base);
        }

        .faq-accordion .accordion-title:hover,
        .faq-accordion .accordion-item.is-active .accordion-title {
            background: var(--primary-light);
            color: var(--primary);
        }

        .faq-accordion .accordion-title::before {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 28px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 13px;
            transition: transform .3s;
        }

        .faq-accordion .accordion-item.is-active .accordion-title::before {
            transform: translateY(-50%) rotate(180deg);
            color: var(--primary);
        }

        .faq-accordion .accordion-content {
            background: #fff;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            padding: 4px 30px 26px;
            border: none;
        }

        .faq-accordion .accordion-content p {
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0 96px;
        }

        .cta-panel {
            background: linear-gradient(135deg, #0a1a3a, #003a9b 55%, #0052d9);
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            top: -80px;
            left: -80px;
        }

        .cta-panel::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            bottom: -50px;
            right: -30px;
        }

        .cta-panel h2 {
            font-size: 34px;
            font-weight: 900;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-panel p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 580px;
            margin: 0 auto 30px;
            position: relative;
            z-index: 1;
        }

        .cta-panel .btn {
            position: relative;
            z-index: 1;
        }

        /* ===== Footer ===== */
        .app-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.76);
            padding: 64px 0 0;
        }

        .footer-brand-block {
            max-width: 360px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-brand .brand-logo-mark {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            box-shadow: none;
        }

        .footer-brand-name {
            font-size: 17px;
            font-weight: 800;
            color: #fff;
        }

        .footer-brand-block p {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.78);
            font-size: 14px;
            transition: var(--transition-base);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
        }

        .app-footer h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            padding: 6px 0;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition-base);
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            font-size: 14px;
            padding: 6px 0;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-contact li i {
            color: var(--primary);
            margin-top: 4px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            margin-top: 56px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.42);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 42px;
            }
            .section {
                padding: 72px 0;
            }
            .section-head h2 {
                font-size: 30px;
            }
            .category-content {
                padding-left: 0;
                padding-top: 28px;
            }
            .feature-text {
                padding-left: 0;
                padding-top: 28px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                min-height: 64px;
            }
            .nav-toggle {
                display: flex;
                z-index: 110;
            }
            .main-nav {
                position: fixed;
                top: 0;
                right: 0;
                height: 100vh;
                width: 280px;
                background: #fff;
                flex-direction: column;
                justify-content: flex-start;
                align-items: flex-start;
                padding: 90px 24px 32px;
                gap: 20px;
                box-shadow: -12px 0 32px rgba(16, 24, 40, 0.12);
                transform: translateX(100%);
                transition: transform 0.32s ease;
                z-index: 100;
            }
            .main-nav.nav-open {
                transform: translateX(0);
            }
            .nav-links {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                width: 100%;
            }
            .nav-links a {
                display: block;
                width: 100%;
                padding: 12px 16px;
            }
            .nav-cta {
                width: 100%;
                justify-content: center;
                margin-top: 4px;
            }
            .hero {
                padding: 110px 0 140px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero p {
                font-size: 16px;
            }
            .hero-stats-inner {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-stat {
                border-left: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .feature-row .feature-text {
                padding-top: 0;
                padding-top: 20px;
            }
            .cta-panel {
                padding: 44px 24px;
            }
            .cta-panel h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .brand-name {
                font-size: 15px;
            }
            .brand-badge {
                display: none;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero .btn {
                width: 100%;
            }
            .hero-stats-inner {
                grid-template-columns: 1fr 1fr;
            }
            .hero-stat .num {
                font-size: 24px;
            }
            .section {
                padding: 60px 0;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .core-card {
                padding: 24px 20px;
            }
            .category-content h2 {
                font-size: 24px;
            }
            .hot-wrap {
                padding: 24px;
            }
            .hot-side {
                padding: 30px 24px;
            }
            .feature-media img,
            .category-media img {
                height: 220px;
            }
            .cta-panel h2 {
                font-size: 22px;
            }
            .footer-bottom {
                font-size: 12px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1e5eff;
            --primary-dark: #0d3fc9;
            --primary-light: #eaf0ff;
            --accent: #ff8a1e;
            --bg: #f6f8fc;
            --bg-deep: #0b1220;
            --white: #ffffff;
            --text: #1c2333;
            --text-weak: #667085;
            --border: #e6ebf4;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(20, 40, 80, 0.06);
            --shadow-md: 0 10px 30px rgba(20, 40, 80, 0.10);
            --shadow-lg: 0 20px 50px rgba(20, 40, 80, 0.14);
            --transition: all 0.28s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--white);
        }

        .section-head {
            margin-bottom: 48px;
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 18px;
            border-radius: 40px;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 38px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: -0.5px;
        }

        .section-head p {
            color: var(--text-weak);
            font-size: 17px;
            max-width: 640px;
            margin: 14px auto 0;
        }

        /* ========== Header/Nav ========== */
        .app-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
            gap: 24px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 15px;
            border-radius: 12px;
            letter-spacing: 0.5px;
            box-shadow: 0 6px 16px rgba(30, 94, 255, 0.30);
        }

        .brand-name {
            font-size: 19px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.2px;
            white-space: nowrap;
        }

        .brand-badge {
            background: linear-gradient(135deg, #ff6a00, #ff9a3d);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 20px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-links {
            list-style: none;
            display: flex;
            gap: 8px;
            margin: 0;
        }

        .nav-links li a {
            display: inline-block;
            color: var(--text-weak);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 18px;
            border-radius: 10px;
            transition: var(--transition);
        }

        .nav-links li a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-links li a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 700;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: 40px;
            transition: var(--transition);
            box-shadow: 0 6px 18px rgba(30, 94, 255, 0.28);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(30, 94, 255, 0.36);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }

        .nav-toggle span {
            width: 24px;
            height: 2.5px;
            background: var(--text);
            border-radius: 3px;
            transition: var(--transition);
        }

        .nav-toggle:hover span {
            background: var(--primary);
        }

        /* ========== Page Banner ========== */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, #0b1220 0%, #152347 60%, #1e5eff 100%);
            padding: 100px 0 90px;
            overflow: hidden;
            color: #fff;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.10) 0%, transparent 70%);
            border-radius: 50%;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -60%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(30, 94, 255, 0.35) 0%, transparent 70%);
            border-radius: 50%;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 40px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }

        .banner-badge i {
            color: #ffc06e;
        }

        .banner-title {
            font-size: 44px;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 18px;
        }

        .banner-title span {
            background: linear-gradient(90deg, #ffc06e, #ff8a1e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .banner-desc {
            color: rgba(255, 255, 255, 0.80);
            font-size: 17px;
            line-height: 1.8;
            margin-bottom: 30px;
            max-width: 480px;
        }

        .banner-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary,
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 13px 30px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 700;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 24px rgba(30, 94, 255, 0.35);
        }

        .btn-primary:hover {
            background: #fff;
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(255, 255, 255, 0.20);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.35);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .banner-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            height: 340px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
        }

        .banner-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 18, 32, 0.55) 100%);
        }

        .banner-visual-text {
            position: absolute;
            left: 24px;
            right: 24px;
            bottom: 20px;
            z-index: 2;
            color: #fff;
        }

        .banner-visual-text h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 4px;
        }

        .banner-visual-text p {
            font-size: 13px;
            opacity: 0.85;
        }

        /* ========== Quick Entry ========== */
        .quick-entry {
            margin-top: -40px;
            position: relative;
            z-index: 5;
        }

        .quick-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .quick-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            box-shadow: var(--shadow-md);
            text-align: center;
            transition: var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
        }

        .quick-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }

        .quick-card i {
            font-size: 30px;
            color: var(--primary);
            margin-bottom: 12px;
            display: inline-block;
        }

        .quick-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .quick-card p {
            font-size: 13px;
            color: var(--text-weak);
            margin: 0;
        }

        /* ========== Category Detail ========== */
        .guide-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 10px;
        }

        .guide-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .guide-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .guide-card:hover .guide-card-img img {
            transform: scale(1.06);
        }

        .guide-card-body {
            padding: 26px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
        }

        .tag-hot {
            background: #fff0e6;
            color: #e65a00;
        }

        .guide-card-body h3 {
            font-size: 19px;
            font-weight: 800;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .guide-card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
        }

        .guide-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 18px;
            padding-top: 16px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-weak);
        }

        .guide-card-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        .card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-link:hover {
            gap: 10px;
        }

        /* ========== Schedule / Timeline ========== */
        .schedule-wrap {
            background: var(--bg-deep);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .schedule-wrap::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(30, 94, 255, 0.35) 0%, transparent 70%);
            border-radius: 50%;
        }

        .schedule-wrap::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: 0;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 138, 30, 0.25) 0%, transparent 70%);
            border-radius: 50%;
        }

        .schedule-wrap .section-head h2 {
            color: #fff;
        }

        .schedule-wrap .section-head p {
            color: rgba(255, 255, 255, 0.70);
        }

        .schedule-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            z-index: 2;
            margin-top: 10px;
        }

        .schedule-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            transition: var(--transition);
        }

        .schedule-item:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-4px);
        }

        .schedule-date {
            font-size: 13px;
            color: #ffc06e;
            font-weight: 700;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .schedule-item h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .schedule-item p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.70);
            margin: 0;
            line-height: 1.6;
        }

        .schedule-more {
            text-align: center;
            margin-top: 32px;
            position: relative;
            z-index: 2;
        }

        /* ========== Tips / List ========== */
        .tips-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .tips-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            height: 380px;
        }

        .tips-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .tips-list {
            list-style: none;
            margin: 0;
        }

        .tips-list li {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
        }

        .tips-list li:last-child {
            border-bottom: none;
        }

        .tips-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 800;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .tips-list li h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .tips-list li p {
            font-size: 14px;
            color: var(--text-weak);
            margin: 0;
        }

        /* ========== Ranking / Hot ========== */
        .hot-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .hot-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .hot-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .hot-card h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hot-card h3 i {
            color: var(--accent);
        }

        .hot-list {
            list-style: none;
            margin: 0;
        }

        .hot-list li {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
        }

        .hot-list li:last-child {
            border-bottom: none;
        }

        .hot-rank {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: #f0f2f7;
            color: var(--text-weak);
            font-size: 12px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hot-rank.top {
            background: linear-gradient(135deg, #ff9a3d, #ff6a00);
            color: #fff;
        }

        .hot-list li .hot-title {
            flex: 1;
            font-weight: 600;
            color: var(--text);
        }

        .hot-list li .hot-num {
            font-size: 13px;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .hot-list li .hot-num i {
            color: var(--primary);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 24px 28px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

        .faq-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-item h3::before {
            content: 'Q';
            display: flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 8px;
            font-size: 14px;
            font-weight: 800;
        }

        .faq-item p {
            font-size: 14px;
            color: var(--text-weak);
            margin: 0;
            padding-left: 40px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #0d3fc9 100%);
            border-radius: var(--radius-lg);
            padding: 70px 60px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80%;
            left: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 900;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .cta-section p {
            font-size: 16px;
            opacity: 0.85;
            max-width: 480px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 2;
        }

        .cta-section .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.20);
            position: relative;
            z-index: 2;
        }

        .cta-section .btn-primary:hover {
            background: var(--bg-deep);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ========== Footer ========== */
        .app-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.70);
            padding: 80px 0 0;
            margin-top: 80px;
        }

        .app-footer h4 {
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-brand-block {
            padding-right: 20px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-brand-name {
            font-size: 19px;
            font-weight: 800;
            color: #fff;
        }

        .footer-brand-block p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.60);
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.75);
            font-size: 16px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        .footer-links {
            list-style: none;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-contact {
            color: rgba(255, 255, 255, 0.60);
            font-size: 14px;
            font-style: normal;
            line-height: 2;
        }

        .footer-contact i {
            width: 20px;
            color: var(--primary);
            margin-right: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            margin-top: 50px;
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.40);
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ========== Responsive ========== */
        @media screen and (max-width: 1024px) {
            .quick-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .guide-cards {
                grid-template-columns: repeat(2, 1fr);
            }

            .schedule-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .banner-title {
                font-size: 36px;
            }
        }

        @media screen and (max-width: 768px) {
            .container {
                padding: 0 20px;
            }

            .section {
                padding: 56px 0;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 74px;
                left: 0;
                right: 0;
                background: var(--white);
                padding: 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                border-radius: 0 0 20px 20px;
                box-shadow: 0 24px 48px rgba(0, 0, 0, 0.18);
                transform: translateY(-140%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                z-index: 99;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-links {
                flex-direction: column;
                width: 100%;
                gap: 4px;
                margin-bottom: 16px;
            }

            .nav-links li a {
                display: block;
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
            }

            .nav-cta {
                width: 100%;
            }

            .page-banner {
                padding: 60px 0;
            }

            .page-banner .container {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .banner-visual {
                height: 250px;
            }

            .page-banner {
                padding-bottom: 110px;
            }

            .tips-layout {
                grid-template-columns: 1fr;
            }

            .hot-layout {
                grid-template-columns: 1fr;
            }

            .tips-img {
                height: 260px;
            }
        }

        @media screen and (max-width: 520px) {
            .brand-name {
                font-size: 15px;
            }

            .brand-badge {
                display: none;
            }

            .header-inner {
                height: 64px;
            }

            .main-nav {
                top: 64px;
            }

            .quick-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .quick-card {
                padding: 20px 16px;
            }

            .quick-card i {
                font-size: 24px;
            }

            .quick-card h3 {
                font-size: 15px;
            }

            .guide-cards {
                grid-template-columns: 1fr;
            }

            .schedule-grid {
                grid-template-columns: 1fr;
            }

            .schedule-wrap {
                padding: 30px 20px;
            }

            .banner-title {
                font-size: 28px;
            }

            .banner-desc {
                font-size: 15px;
            }

            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
            }

            .faq-item h3 {
                font-size: 15px;
            }

            .faq-item p {
                padding-left: 0;
                font-size: 13px;
            }

            .cta-section {
                padding: 44px 24px;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .app-footer {
                padding-top: 50px;
            }
        }

        @media screen and (max-width: 360px) {
            .brand-logo-mark {
                width: 36px;
                height: 36px;
                font-size: 13px;
            }

            .brand-name {
                font-size: 13px;
            }

            .quick-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
  --primary: #0f1c3f;
  --primary-light: #1e3a6f;
  --accent: #ff6b35;
  --accent-light: #ff8b65;
  --bg: #f4f6fb;
  --bg-deep: #0a1226;
  --card: #ffffff;
  --text: #17202c;
  --text-weak: #64708a;
  --border: #e2e8f0;
  --success: #22c55e;
  --warning: #f59e0b;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(15, 28, 63, 0.06);
  --shadow: 0 6px 24px rgba(15, 28, 63, 0.09);
  --shadow-lg: 0 14px 44px rgba(15, 28, 63, 0.14);
  --font-main: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition: all 0.25s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.container .row {
  max-width: none;
  width: 100%;
  margin-left: 0;
  margin-right: 0;
}

/* ===== Header ===== */
.app-header {
  background: rgba(15, 28, 63, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(15, 28, 63, 0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-logo-mark {
  background: linear-gradient(135deg, var(--accent), #ff9f1c);
  color: #fff;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
}

.brand-name {
  color: #ffffff;
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: 0.6px;
  white-space: nowrap;
}

.brand-badge {
  background: rgba(255, 107, 53, 0.18);
  border: 1px solid rgba(255, 107, 53, 0.45);
  color: #ffb89e;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 9px 18px;
  border-radius: 24px;
  transition: var(--transition);
}

.nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-links a.active {
  color: #fff;
  background: rgba(255, 107, 53, 0.2);
  box-shadow: inset 0 0 0 1px rgba(255, 107, 53, 0.35);
}

.nav-cta {
  background: linear-gradient(135deg, var(--accent), #ff8f4a);
  color: #fff !important;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 10px 22px !important;
  border-radius: 24px !important;
  box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.45);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Article Hero ===== */
.article-hero {
  background: linear-gradient(135deg, rgba(15, 28, 63, 0.96), rgba(28, 47, 94, 0.92)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 64px 0 72px;
  position: relative;
  overflow: hidden;
}

.article-hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -40px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.2), transparent 70%);
  pointer-events: none;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.65);
}

.breadcrumb a:hover {
  color: var(--accent-light);
}

.breadcrumb span {
  color: rgba(255, 255, 255, 0.45);
}

.article-hero h1 {
  color: #ffffff;
  font-size: 2.2rem;
  font-weight: 800;
  max-width: 860px;
  line-height: 1.35;
  margin-bottom: 20px;
  letter-spacing: 0.3px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.88rem;
}

.article-meta i {
  margin-right: 6px;
  color: var(--accent-light);
}

.category-badge {
  background: rgba(255, 107, 53, 0.22);
  border: 1px solid rgba(255, 107, 53, 0.5);
  color: #ffb89e;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

/* ===== Article Main ===== */
.article-main {
  padding: 48px 0 56px;
}

.article-layout {
  display: flex;
  align-items: flex-start;
  gap: 32px;
}

.article-layout .columns {
  padding: 0;
}

.article-body-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 44px 48px;
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.9;
  color: #2d3648;
  overflow-wrap: break-word;
}

.article-content > * + * {
  margin-top: 1.4em;
}

.article-content h2 {
  font-size: 1.45rem;
  font-weight: 700;
  margin: 1.8em 0 0.8em;
  padding-left: 16px;
  border-left: 4px solid var(--accent);
  line-height: 1.4;
}

.article-content h3 {
  font-size: 1.22rem;
  font-weight: 700;
  margin: 1.6em 0 0.7em;
}

.article-content p {
  margin-bottom: 1.1em;
}

.article-content img {
  max-width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin: 1.5em 0;
}

.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: #f8fafd;
  padding: 18px 22px;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-weak);
  font-style: normal;
  margin: 1.5em 0;
}

.article-content blockquote p {
  margin: 0;
}

.article-content ul {
  list-style: disc;
  padding-left: 1.6em;
  margin-bottom: 1.2em;
}

.article-content ol {
  list-style: decimal;
  padding-left: 1.6em;
  margin-bottom: 1.2em;
}

.article-content li {
  margin: 0.5em 0;
}

.article-content a {
  color: var(--primary-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover {
  color: var(--accent);
}

/* ===== Tags ===== */
.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.tags-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-weak);
  margin-right: 4px;
}

.tag-pill {
  display: inline-block;
  background: #f0f2f8;
  border: 1px solid var(--border);
  color: var(--text-weak);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 20px;
  transition: var(--transition);
}

.tag-pill:hover {
  background: var(--primary-light);
  color: #fff;
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

/* ===== Share Bar ===== */
.article-share-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 30px;
  padding: 18px 20px;
  background: #f8fafd;
  border-radius: var(--radius);
  flex-wrap: wrap;
}

.share-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-weak);
}

.share-label i {
  color: var(--accent);
  margin-right: 6px;
}

.share-actions {
  display: flex;
  gap: 10px;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-weak);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.share-btn:hover {
  background: var(--primary-light);
  color: #fff;
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

/* ===== Empty State ===== */
.article-empty-state {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  text-align: center;
  padding: 88px 48px;
  max-width: 680px;
  margin: 0 auto;
}

.empty-icon {
  font-size: 3.4rem;
  color: var(--accent);
  margin-bottom: 20px;
}

.article-empty-state h2 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.article-empty-state p {
  color: var(--text-weak);
  margin-bottom: 28px;
  font-size: 0.98rem;
}

.empty-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== Sidebar ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 100px;
}

.sidebar-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.sidebar-card:hover {
  box-shadow: var(--shadow);
}

.sidebar-title {
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}

.title-dot {
  width: 8px;
  height: 24px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--accent), #ff9f1c);
  display: inline-block;
}

.hot-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid #f0f2f8;
  transition: var(--transition);
}

.hot-list li:last-child {
  border-bottom: none;
}

.hot-list li:hover {
  padding-left: 6px;
}

.hot-list a {
  font-size: 0.92rem;
  font-weight: 500;
  color: #3b4659;
  line-height: 1.5;
  flex: 1;
}

.hot-list a:hover {
  color: var(--accent);
}

.rank-num {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: #eef1f7;
  color: var(--text-weak);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hot-list li:nth-child(1) .rank-num {
  background: linear-gradient(135deg, var(--accent), #ff9f1c);
  color: #fff;
}

.hot-list li:nth-child(2) .rank-num {
  background: linear-gradient(135deg, #f59e0b, #fbbf24);
  color: #fff;
}

.hot-list li:nth-child(3) .rank-num {
  background: linear-gradient(135deg, #64748b, #94a3b8);
  color: #fff;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tip-card {
  background: linear-gradient(135deg, #fff7ed, #fffaf0);
  border-color: #fed7aa;
  position: relative;
  overflow: hidden;
}

.tip-card::after {
  content: '';
  position: absolute;
  right: -30px;
  top: -30px;
  width: 90px;
  height: 90px;
  background: rgba(255, 107, 53, 0.08);
  border-radius: 50%;
}

.tip-icon {
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 12px;
}

.tip-card p {
  font-size: 0.92rem;
  color: #6b4a3a;
  line-height: 1.7;
  margin: 0;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 24px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ff8f4a);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.45);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.btn-dark {
  background: var(--primary);
  color: #fff;
}

.btn-dark:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

/* ===== Section Block ===== */
.section-block {
  padding: 64px 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.section-head.center {
  justify-content: center;
  text-align: center;
  flex-direction: column;
  align-items: center;
}

.section-overline {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.section-head h2 {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--text);
}

.section-more {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-weak);
  white-space: nowrap;
}

.section-more i {
  transition: transform 0.25s;
}

.section-more:hover {
  color: var(--accent);
}

.section-more:hover i {
  transform: translateX(4px);
}

/* ===== Related Section ===== */
.related-section {
  background: #f9fafc;
  border-top: 1px solid var(--border);
}

.related-grid .columns {
  margin-bottom: 24px;
}

.related-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.related-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.related-card:hover .related-cover img {
  transform: scale(1.05);
}

.related-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 28, 63, 0.82);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.related-info {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.related-info h3 {
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.5;
}

.related-info h3 a:hover {
  color: var(--accent);
}

.related-info p {
  font-size: 0.88rem;
  color: var(--text-weak);
  line-height: 1.65;
  margin: 0;
  flex: 1;
}

.related-meta {
  font-size: 0.82rem;
  color: #a0a8b8;
  display: flex;
  align-items: center;
  gap: 6px;
}

.related-meta i {
  color: var(--accent);
}

/* ===== FAQ Section ===== */
.faq-section {
  background: var(--card);
  border-top: 1px solid var(--border);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fafbfd;
  transition: var(--transition);
  overflow: hidden;
}

.faq-item:hover {
  border-color: #d3dae6;
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  cursor: pointer;
  padding: 20px 26px;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--accent);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-item .faq-content {
  padding: 0 26px 20px;
  color: var(--text-weak);
  line-height: 1.8;
  font-size: 0.92rem;
  border-top: 1px solid var(--border);
  margin: 0 26px 0;
  padding: 16px 0 20px;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(15, 28, 63, 0.96), rgba(28, 47, 94, 0.92)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -80px;
  left: -60px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.25), transparent 70%);
  pointer-events: none;
}

.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 0 auto;
}

.cta-text h2 {
  color: #fff;
  font-size: 1.7rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.cta-text p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.98rem;
  margin: 0;
}

.cta-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.app-footer {
  background: var(--bg-deep);
  padding: 64px 0 24px;
  color: rgba(255, 255, 255, 0.6);
}

.app-footer .row .columns {
  padding: 0 15px;
  margin-bottom: 32px;
}

.footer-brand-block {
  padding-right: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand-name {
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
}

.footer-brand-block p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: translateY(-3px);
}

.app-footer h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.6;
}

.footer-contact i {
  color: var(--accent);
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  margin-top: 24px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom p {
  margin: 0;
}

/* ===== Focus States ===== */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(255, 107, 53, 0.5);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }

  .article-hero h1 {
    font-size: 1.9rem;
  }

  .article-body-card {
    padding: 32px 32px;
  }

  .article-layout {
    gap: 24px;
  }
}

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 0 20px;
    gap: 12px;
  }

  .main-nav.nav-open {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    gap: 6px;
    width: 100%;
  }

  .nav-links a {
    display: block;
    text-align: center;
    padding: 12px;
  }

  .nav-cta {
    text-align: center;
    display: block;
    padding: 12px !important;
  }

  .article-layout {
    flex-direction: column;
  }

  .article-layout .columns {
    width: 100%;
  }

  .article-sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 20px;
  }

  .article-sidebar .sidebar-card {
    flex: 1;
    min-width: 260px;
  }

  .cta-box {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }

  .cta-actions {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .brand-name {
    font-size: 0.98rem;
  }

  .brand-logo-mark {
    width: 38px;
    height: 38px;
    font-size: 0.85rem;
  }

  .brand-badge {
    display: none;
  }

  .article-hero {
    padding: 48px 0 52px;
  }

  .article-hero h1 {
    font-size: 1.55rem;
  }

  .article-meta {
    gap: 12px;
    font-size: 0.82rem;
  }

  .article-body-card {
    padding: 24px 20px;
    border-radius: 16px;
  }

  .section-block {
    padding: 48px 0;
  }

  .section-head h2 {
    font-size: 1.35rem;
  }

  .related-card {
    margin-bottom: 20px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    min-height: 64px;
  }

  .brand-logo-mark {
    width: 34px;
    height: 34px;
    font-size: 0.78rem;
  }

  .brand-name {
    font-size: 0.86rem;
  }

  .article-hero {
    padding: 40px 0 44px;
  }

  .article-hero h1 {
    font-size: 1.3rem;
  }

  .article-body-card {
    padding: 18px 14px;
  }

  .article-content {
    font-size: 0.98rem;
  }

  .article-share-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .article-empty-state {
    padding: 60px 24px;
  }

  .article-sidebar .sidebar-card {
    min-width: 100%;
  }

  .faq-item summary {
    padding: 16px 18px;
    font-size: 0.92rem;
  }

  .faq-item .faq-content {
    margin: 0 18px;
    font-size: 0.88rem;
  }

  .cta-section {
    padding: 56px 0;
  }

  .cta-text h2 {
    font-size: 1.35rem;
  }

  .btn {
    padding: 11px 20px;
    font-size: 0.86rem;
  }
}